Elon Musk returned to Detroit on Tuesday afternoon saying he wants to promote the development of electric vehicles.
Despite plunging gas prices, Musk said, "The need to transition to electric cars is urgent."
His appearance at the Automotive News World Congress marks the first time Tesla's CEO has been in Detroit since 2013. Since then Musk and America's auto dealers have been fighting with each other state-by-state as the dealers and politicians try to limit Tesla's ability to sell directly to customers.
The dealers have had some success, most notably in New Jersey where lawmakers passed a ban on direct sales of autos. But they haven't stopped Tesla from growing sales.